{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601282125",
    "entityType": "User",
    "nonce": "0x2cd31ecd604d448869a08fa62f9d536f778e603027b27f77678870bfb54c8089",
    "signature": "0x488c44a749b8f1e4faeef7803a760cb822457bbc029a0f5bb331ccbc2eaa05e0555d3b731ecf611d8e76fda80c3a6ac1095bc009ab49358fb1cf6e3d8a16d1a31b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}