{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "463085",
    "entityType": "User",
    "nonce": "0x203781a7e25b62f4bde531ded075cb0d7860a468fee7c4001e0f28400e058498",
    "signature": "0x9ef7a6cc3aef23d5a81a4cc7dc3a1e65881087d69e628da2bd424d4aa466f76a506052aa706a0d8ca5f1a088105e659414e17b16595c3f0e0c3240caaf07b1311c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}