{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "577745560",
    "entityType": "User",
    "nonce": "0x9addd1a36ecef1f8fc2ee334f75b3646a7669c09546b5eedb81e11b3e6687fbe",
    "signature": "0x59f8887a29852f6c9c5fb0ff0fb215dffc915001f42c76eab0470576d9bfa4d6280bda4a1e435cfea1dfbcdaa653a7cfe6c55a8d8a4976da2bc7bf5a514b56281b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}