{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "730956171",
    "entityType": "User",
    "nonce": "0xb28c923f127c2fd106be9c085e171b0556eec5accd5a15b6edb1f00abe1b09cb",
    "signature": "0x718d7b68d96d8f4cd2289841a83d4c6038abf2b50450779f4e617f2359d3336a55bf62c91c387b93f33c886860e02a70e39fbefba2f1764345a0d7c64c89a0471c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}