{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0xaa6c220ab428ec6d17b88e741fe6829d3c97ebd9ff2010b1bc47be8adb14c343",
    "signature": "0xe308c602180bf436b205583f98717976ac04e92f11f30941f7575bdcaef4a6884503e0764713aefb2cd1ca393d6138e64b339210edc5a25ef207d1153d88cd8f1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}