{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55577",
    "entityType": "User",
    "nonce": "0x6141c85bafe7de4dc9ae77f30bbf847a3843a78f269b3fcd0a3ea4c73041c1c3",
    "signature": "0xb74193020303863853c7d514219ab24306c400c3cfaecbfb18e3b06f87669c2e6994ad80d545a90d47e7eb805172cb7cc64aeb323815c60fc0a9ea42414e1c0b1c",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}