{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0xce8ddad5b5a9fcdf136d7486299de6e8fcf43905481d1697830778638a7a07b6",
    "signature": "0x305ac8ffece835c3ff5ec4a519f68ebdf00c4053fb7ab20c47902db5c52d479e160a159a5587bbb2f6c79ee5ac540b99b0b9d909aaca87de138f257eb17a27951c",
    "signer": "0xCd69C2Cb50a21531a08Db7A8333c51532ea010f0",
    "userId": "837274016"
  }
}