{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeab5ba5c9291136db3f9ea752d3a7fd949fae167d9ffdb7353e062f79d2445cd",
    "signature": "0xa551f8a4cf2ce6b3d26927ac4371b45479f63fbd83204c3c8b7c9ed34b0181b7756b579922676875e7d01de000e4e93e5da9da78d1cbbc479a31282b1fdb03251b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}