{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ef451c451ef882806f9106988a1c902e6849bf6d145823fe39d475f24f83307",
    "signature": "0xb9205cac8e7c6388b588bd5395e946a09992dac6971e66585c850e0f49d8551a0e8f56ea1e3d5a829d9e20c220db02699ef582cb791c9a4f4a4b3ef13e0ae0511c",
    "signer": "0x339DcD042D5dFC15a882516Ad5c40B4bfD62dF27",
    "userId": "213553850"
  }
}