{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x157c0e0dcec1dee6c61219c44f65309311edf65f5bb39a63d5379c9ea0fe2b79",
    "signature": "0x5bc1495534d373bef2fae2babe6cd0038005a12bc87488912a094fda159822cd69f690fc4a3c0c78e2e053c38ff6a170369e85a14b4a775e54dc3c78e22c99231c",
    "signer": "0x66d0Af4A6D17aee8eeb3f04953c1736d90B76F09",
    "userId": "593682731"
  }
}