{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x785bd336a4c27d8f977bd9567ac43216bd144691353df9efe42f9787db174a2d",
    "signature": "0x222b41577bd326cd0b3fd7565ae0e20932159026b89251e51fef6e580c8b302d124e52f3dce17b2a8a47cd450e1440c4206ed408126db9128e2e5f0609dfb6781c",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}