{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880676",
    "entityType": "User",
    "nonce": "0xa3ad1e556fd5c04ef9084b6cd52d43bf77f0d60e5976359d52b369d415d83efe",
    "signature": "0xddab82e7ed4bb7e972b57b578f9e9b6752daf31224b21d52f54057e362f8a219013e02a72b7cdec45f884a973ca56762e7bafff608e10e35f14d3bb721183cfc1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}