{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4e3bb2268d53e98a5565830bd3ea8aa9de221a1a05174354ce2b8c8397542834",
    "signature": "0xc301651c9ec79df7095f282cec554931acf6925ced013f30f56ee7a7b41527113377dba2defaf1197d31b2d0a2b3bdd2d85dc79ebcc89c27099f1ad32029b2d61b",
    "signer": "0xe8b35C15D74ca4BFaA90fdA95a1602B2175ec8B7",
    "userId": "432325885"
  }
}