{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xeaee7e631886d89a86bbc96101bb25ce7ad1f711974a562d444f4a08cdbe6a72",
    "signature": "0x63e2bf7f685db5e2e03c67884ca49de3bb1c54016324cdb7a630ab04aa1cd65a661375d9cb7e246003ae63cb528d4d22201f22dbe484a8dee0336bdc718c40d71c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}