{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138974",
    "entityType": "User",
    "nonce": "0xf71c651f218d138fd0367b03a6b52fc44e2fdbbebd9840da275731e2d2e58f94",
    "signature": "0xab167030bc9fb3e6d1fba363853d8a8f5983875a19786c16d52632cdf8f944e974c5ef8b41f0fec158220c23ad01fc5f7dca6ef540abae8b2a9b44b2234b37791c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}