{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd899f80ca1d71ddd35f0e54ccf23001e576e259045c8cd050aeeec405f048966",
    "signature": "0x9697ac688bd7c18b4567c600820995a9693fa5f9df50190be915b4b4f090860d5ed644be75699061bae1d0e75ce57e145aad62ec44fa2eb6aeabdb7310d534021c",
    "signer": "0x31E96b94d6Bb874D2e072949ABeb3D4E7c4D5385",
    "userId": "214266769"
  }
}