{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x523ed77d5c5447027369861bd37d1ca93058dbf38ec67f98b3fac35f475f1782",
    "signature": "0x53152b4dd1cf37b497e732e69c5e7ac4253fbe398275f601a5559daae0ad4e254945829b8593d5e8ea1e3b0306741de04330c70446ae03d4b222380ddb8baf471b",
    "signer": "0x58E590293E7aC2D466d8902594f0f2Cad494dCeE",
    "userId": "921946884"
  }
}