{
  "manageEntity": {
    "action": "Create",
    "entityId": "599958350",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"👌 \",\"entity_id\":665020578,\"track_timestamp_s\":38}}",
    "nonce": "0x8ebac43cfe6d6feacb6f0a676731b560002538162a8dc3adf135bf2209ad4f93",
    "signature": "0x362c764334408f260758db59f57984db08e3959fa7ef4e77d0b68fc2d2b228f132d7ca9984d24d8883dbef6debdfcad012ae22723447808541cdd87aa088f8ef1b",
    "signer": "0x28945B345Dc8334c21B4e932dA506ca6Fac7e18a",
    "userId": "290283513"
  }
}