{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9b14c8116563b7e63a90c7b117dde4d71d48f71738f2c1792ff095b2a7ee488f",
    "signature": "0xa47dc0fb9c2f34246a011adeb2c0491969ed76d771881d7849601360c1a887a524d257509a2b56e497b1b7b72e76d9c78d2d3ca93e5e33ede3eff3a1bab2afa11b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}