{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf83628619be12dddad497c4c1f634080c4c70b8cc651409e2b0001adeeaea6e9",
    "signature": "0x834182c5c13a2099f159acf78d5fbbd25a7ca06e18319c0ad80f06bfb83094fb2993624ac044e03d8465a0dbbdb4c6405e6f461aa61b7fbd13079b49e5306a2b1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}