{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882449",
    "entityType": "User",
    "nonce": "0x107bf2d1b7d283e080688bdff78acef17dcd464830df126a05861fc0d6f38e01",
    "signature": "0x13d0488224163f524ed63571ff8148b71d8e4d3b7ab778ee83742c9d3696f0422eda78d330ff2f67f76c4ce8355bcca61923ff968108aaf06eb1ee1ec91c63e21c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}