{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb110890e6d679d98eb8251f832a385c1a49d340d5a95c80a03c151d54a229640",
    "signature": "0xa6957731674e298e3cd9f159c335a445bd25950598d32b32dc63e228b36426ec2b1eef910d041c232d74a949d24b630a90b48fde3a41743b53cc4f547fe0c4ab1b",
    "signer": "0x2739eCab61Bd0fe15732eE7B3040F4F5a1b0f1EA",
    "userId": "503994528"
  }
}