{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa0a4a27bed21a513a345e38ba0b7d2246cbbdb113221e1456f834f414ae1cb4a",
    "signature": "0x6da4328a78316dd89abdab781b8ed497da65e9e75903077de76b128452b9e98500e906aceef063a111ac0a83946c11605a091db3d09fc0a3ef598f01fcb3acd41b",
    "signer": "0xb9b3fAAA609Cdfb9f27Bc06422E085620dEe9324",
    "userId": "557863873"
  }
}