{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x620ec3d27bff8ee1b05b90b029f822aa815758a8870f4cdc4e512e0e1f1fee99",
    "signature": "0xab90f768c0bb5a529a8517d21e90d7c21b83cca342c9d563e3c8c83e6f276c683256288d2e047724a623f52d5d8dc1bcf6b00b27345afde74473a4eb77ff01111c",
    "signer": "0xFb67a263D7648dD1470c4C29E73b437EAd27972b",
    "userId": "215477734"
  }
}