{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "859175075",
    "entityType": "User",
    "nonce": "0xb875cb77a024fcfc5264c82a2dab498e878bd56e166af4da56d4a9535e490d2d",
    "signature": "0xbb43af7d1f466b060a8a9cca57d7bba92a0e6e4ac883a515b52d9d4915bc1ce700d545b91c1466b4785d479cbf8f805aaab1a75d87b3be4623121d81540a180f1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}