{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1471974",
    "entityType": "User",
    "nonce": "0x480560c5a99c4ac94a09cb416e3ada19ccffdb4046936467c80a753a48630347",
    "signature": "0xdb180930492edbe5fe69e3253fc5c0f962f86b0a65db6cf0a460c9c204b69980505da3a70aecab690230ea0cc88c82d9c182a864605c61c95a2c867953d3699f1c",
    "signer": "0x975699e892A0a2f2f16d2b8950Ac7C882B8EF555",
    "userId": "544952248"
  }
}