{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "757958666",
    "entityType": "User",
    "nonce": "0x4c20e53e7fdbf6d8f484b5ba6fe3c6f5ddd4447a59a4d035b3a736b61ea92b78",
    "signature": "0x02a67ffbfb2ca4930a68ef0bf7ce5c5e8db90d6e28340d45af3915357a4a28284c68bc00831d3995fa0a5304bf7946744c9164956663d928435497381675961d1b",
    "signer": "0xF7C299AB5282FD59254Ec0098FC5F1B997682c83",
    "userId": "61898"
  }
}