{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12728",
    "entityType": "User",
    "nonce": "0x717eccacc7e90334066bc698a07ef559f2d59499a78925a2822016700ad5d827",
    "signature": "0x0fbe7071dfc2bef2a0413b0a47d14834d650d9d9bd8f2f48e704b899af4a878b383b5b25d7cafe016dc4bdc135fd3e2ce938cb29fddcc415b32cf47a532a1d4a1c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}