{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "507325593",
    "entityType": "User",
    "nonce": "0x55a637e15510cd3d405a40b77b02dff832ae22358ffde9ad79617c87caa9ac36",
    "signature": "0xff4cff0ae57a14f87d2b11b5429ab9061eaf3ec5e115293d3ed679e589cd34f67ea8f42fed92b902d15695e490181e4c5d02ed3ab4673ea311ec6274e6c66a731c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}