{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xf60658f4e650273c2e8eb77cb8b38ac41182807c7851e97130c6dae6957b4b7a",
    "signature": "0x2228c72024f709201495c53c9b8451f13c40b322c4875c0bde62637183602c503f2852da44113559391ee6e6dbf3ac836c85fee67bd4e6425ca0c788dfc0afd91b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}