{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0xe312594a8ee4a9a6d90a64b1222ed163ef3eb7c064ea97f84cbc22ab877aecec",
    "signature": "0xe67d3c535c5883cc8a12ba2b4da8e014ec4037c2d61c90e2bb3c488e0d95d9bf0acd18f654a946e08347b685a2599cdb4f66671acfb998e7b9ebb9f4d0cf32031c",
    "signer": "0xB70594E4e1D6CD6874a017D1db2DE2805cBd9dCF",
    "userId": "40531"
  }
}