{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "994013869",
    "entityType": "User",
    "nonce": "0x9ced0902a1a5b5ae1725a5a42ffff3749b15eadc86056a517f973fafee226f81",
    "signature": "0xee895f34d5e641a080794294960fee9db60c70424679e0a58b967f4395d09c1465befcc673121d0503c3706a7da52d39d3ff0862bb94786c9346fe62bb12d5931b",
    "signer": "0x0C73Cb0314281db439083e5ae4b1443Ac537a76b",
    "userId": "346579799"
  }
}