{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0xad3d4c7bfc23c4c92131ddf538eb782c685774ddd74c963921048da312d0ef4d",
    "signature": "0xb71f6b67a63b18dd808068d56ac421da6a292ce1ffbb8ba3acce3f4e9a304c6c57e49d68f4e95cb51fe9ab5586ca61fd00beb4bdda1e20b6e9f836804e4eb16a1b",
    "signer": "0xfeBBAF2B7d9F5bE3DAA34bEe70259f61ac4aB836",
    "userId": "139146722"
  }
}