{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324479",
    "entityType": "User",
    "nonce": "0x5d48e2b0e47d1fb52c7bc3ae132455906dab438e99221d55ed02e58324387511",
    "signature": "0x0eafe6f5dae742e4b12f19a0dac6a37531d716eddd99205f324d227b1eb303e0601b4c240c5096f3073ddf98c083d002eb88f2050a20651ecadc32fb75d4027f1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}