{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200841",
    "entityType": "User",
    "nonce": "0x578d65d504f7c8b6ddc152aa89f1e6814e59bd8aebd5df6ff834df85b5832a7b",
    "signature": "0x6379a107a0101e85a70a4fe0bfc29c5f06eb5f2dbd14d32a2a886f55ccb2b9b1244a763932d373f46b6fcdafbab933d0f49802e7fe7a9b20f120f6877b1a6f281b",
    "signer": "0x63762Ba099c2247aD3755af8aCb1d62705f0D5CC",
    "userId": "851444561"
  }
}