{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x15ef95fbb069d79325fd645a40f57e32d467fd043dc7a1d91cf69e123ee07921",
    "signature": "0xa8c578b7d9f2cc2fe52d8aa53d3357a4b60ee0a71fd0698707e503b24d1f31847713ec671c1c93c2efe341a3570b97025ab85ae10ab2dae8b4c735498572f4ef1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}