{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "651253830",
    "entityType": "User",
    "nonce": "0x284755cbf0921baaad7145857623a74411f248dfa211a5bda7ac11e6c7c5ea19",
    "signature": "0x01d2046e7fc8277f17e82931155b828b5d83fe6faea68d50ee6189a73623c5eb15fa1324105cb0d3980a10bf1b4828d865aadb688edb8c0f6bddd1f2c273bf581c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}