{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "416239376",
    "entityType": "User",
    "nonce": "0x4f3b8929e5b95daa18bbaa5a0bffc0a5e996d1cf35ca831018e3a41e6aa620e7",
    "signature": "0x6f9e4f98029d43a82a4fecec881cfc56de3e06bcc970b7f726e7aa2a87eeb6bb5f6c08da24257d858dadd57de6b5f2defd2cf9f7783aad278bbdd23e395caed11b",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}