{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8ea9943da1ecba6bd1c53c0417896bb5e2d3456d1e78abf80c5e66b562f4b53c",
    "signature": "0x6cf32efc2959d533ff3c1c6fa4925731a3637c4d8ca5415dbd2fee29121bb044447d24ce35d13baa9fa1cb42a24c20a882cd90499d2b0e48a1f1e1a901a9704d1b",
    "signer": "0x3275fb5673c628bDF46f3BD4E08478d1C4e5deC2",
    "userId": "591888459"
  }
}