{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0xeffa88f24debbce2c3269cfe5647b41ecbb412d87361f86a574b708bb7125a53",
    "signature": "0x238b8db2cdf3781d114c4ec8d727d364c7e3c49c1bc9f337dc153ef5087eeb7478fc3acd19fde5c16048ef43ad5140a1ebdddd8244fbb63f6510c6f99c82ce7f1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}