{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x139278b3d2de353917f1a580ab3315d71bc6c5c8e6e25f1260c1420e01330229",
    "signature": "0xb5d88b1b01529745f2b321d2cc2717da46a2bb01f427d453e6c8863e2f7d33c25f152ba20e1a7b2fe5f762b435f0cec5e6411e99a8bc8cb0f29fa654a64390861c",
    "signer": "0xf4932982eB30F083aAeE8850Fe5d411b7A5Df5a5",
    "userId": "746635137"
  }
}