{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "740883",
    "entityType": "User",
    "nonce": "0x04fe9e0d81f04325d3b1c80f78ea6b4a9c475f1457b92029a9ab3d9e9dd9678c",
    "signature": "0xa25ce9294492eec98c30dd1527d7545d7700d32261fcbfc8f3b9d97acf52aa73172d667f5f5b711d6ce3f95d26f0e4b62949f0c913bb53b62a2d22b2524a5a9b1b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}