{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcf824acb2206173ea7dde761a129da1f4236e44044940ef3ab2989c66ff5e750",
    "signature": "0x4df8c617c61a005e5fd362db2117291c2503b06746a4f199b4f35e218b4e51595fece3206b4dcf4fa62aee2547cdd4b61b1b41d0572fcf5084dc067aedcb40941b",
    "signer": "0xF6F9F433Ab5dDe3c96D63C2fFAa64b610599a410",
    "userId": "80682"
  }
}