{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a6986d1a9cf4711cfd86db271fe6951b9715ccea96f619005bf42396d2d6889",
    "signature": "0x5ddb8b0e4c074cb89f9ec38fc08fa319f463ff650c82092c8650590bcbdaf38a0416ced4b3c21e1bfee673cd7ef9649d5b1f94d939f2ffad0f43ea110f1088b41b",
    "signer": "0x64BBff771BdA86b42F6fdbBb1f5fd331e6E82f95",
    "userId": "652074676"
  }
}