{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53188210",
    "entityType": "User",
    "nonce": "0x88bdd6baf07792b89bf8c68de98d758eab3039940f4443c9dbd7e0314e6ab173",
    "signature": "0x529067cdc0eef2515089a9a4eb8c3c32ec9621ed6df8a339ee7061332cf9824002a1fd6da4de3833b516e5caa543366976fce5bc09cc1b271d3502318d5e8cfb1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}