{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "505572751",
    "entityType": "User",
    "nonce": "0xad7763a10fc2d65eda89e8eeae7bff4d57104fb46e36e9f3799fb96e6d9bf516",
    "signature": "0xfbcba2a4697a119e32312b2c5358811fdd358371fb02847939e05808d3497eb621005b3b676e3e5ca6504af35acbb98b6d65e45a343fd8da00f4102c8d3990c21c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}