{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73852",
    "entityType": "User",
    "nonce": "0x643a5233c2af407d22c75bc9c7e249cf5292020e2063246ebc2dfd375365d329",
    "signature": "0x2f2437b5e4fefc4bc134cfd9ca13480e0d0719a3c4b43d9bb6c30692e35db0f1169046168558019ed5d2f379d21a0d2fed95b65dbd8c30a65f64f2276cd869221c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}