{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751664",
    "entityType": "User",
    "nonce": "0x77ff72f1ab9c58160cc8aebafa7c04db5a1ff566ad57355b39ac289c6846eca1",
    "signature": "0x3fab96ec6c165c133520af277bf1c00a02d226eaaa99c3bc9f9f6e8efdac064f0bcb1e0451e33ed4b21d27c55cb9bd572c65655bfec88013c5b34cb6be4ea8d81c",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}