{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbf1d50ad4b7d81a9e37ae2a96174784bda81749446addd14740eb14feb433dd8",
    "signature": "0x354252f7819c297a47bb13e008f7a8aace9bcb7d13bc1e88b95d6b8eca3eca59552ab1001e75e4d6db66f21237fd18602007b4e1b3dbcf2928346c95fa08c1801c",
    "signer": "0xCbEafbfeaE89c95e1E2c0913fA43e0908f3376dC",
    "userId": "878436029"
  }
}