{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x97ca8a37f7712485237cac8a1ff5373888566821e36324ac66611b706016e0cc",
    "signature": "0x72af39cf952f3463cc80c7f4e8e9a8840f589e9e2ffbc0dad3e19108e920e6044aca3d885fef8fe6089ced3f16ec6983890e8cb0e7575f380b7d397286fba6431b",
    "signer": "0x78B87Ff29aa76D06fDb61938D4A862E7ddEb868d",
    "userId": "507757498"
  }
}