{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904230991",
    "entityType": "User",
    "nonce": "0x12439a0d2e68de1e71fe0e66e2571e9b68c4b0becd3dfb34fa77c459c85ea725",
    "signature": "0xeef299c7aa31fe8bac26544b984e46365dace50e596ab4bf146207843ca1915d4dfd94eaadde5cf0b2c53e99ecd7c863e54d092b4ec0e809ca9b9d735a9079761c",
    "signer": "0xc707C7836B97C5d3764A5a9121DEBA4711b10A7B",
    "userId": "332895823"
  }
}