{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904230991",
    "entityType": "User",
    "nonce": "0x6cf365ba1c5f37358c7949853826696655644d342e7b75aec6cb696dbe13b87d",
    "signature": "0xcbf1341daaaca6ae2c12819b24abd63426b2f251a036032bcbdcba044f55ca706dcaea1a5ec04224bbd7b4a1718fee2819eeae027e40b765bdd29a371f15250a1c",
    "signer": "0x6F3aE43BB2df53A1aCA47FBD0F3DBC879eC87cc0",
    "userId": "370701108"
  }
}