{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xda581b3da9238cd78b01bb0e51c0a8215720a29ea9cbd671b65de48911da900a",
    "signature": "0x808a981c8fb3cd9071de002dac458d76399a34db7bddfc0a39c087c2626af8c71c88417f06060c1b0fb070b83bf19ebabe91d737a80e9259fddbe2e2da14fea21b",
    "signer": "0x041097A772bA172637e2c15FbD947167da160ef6",
    "userId": "557355303"
  }
}