{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcc6c74b09ac3bb06d1089f8d0b70585ef96beb86f143ec91326437d5b5f324da",
    "signature": "0xfd13c5bb1310e5234c6adc1e5f211e6f1c271a8a8c865590b5065ff0fc7854dc4e5601f06c97ff55f6a3d17ebf4ebccdfff1781de1a2b2aba1341bc08be5bb5c1c",
    "signer": "0xD998291c151d687cE945559f5AD3fe91d77f23Fd",
    "userId": "247903729"
  }
}