{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "689860",
    "entityType": "User",
    "nonce": "0x2a7f1a68b10e15d3f734bff21b7d05d07bbe5cc0b03013c68c9ee73084401367",
    "signature": "0x17141081edeeab68f8a2b02d4d1f29383351b7e0127a02c0a0cf0a70a4a5d43b21a6dcb43384ff80a307c0f6d068084cf88c080a93a11748578614afe6c5c9d41c",
    "signer": "0x8fb06be829c5718Bb968af1525d910B795617ac0",
    "userId": "950478625"
  }
}