{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb170789ea8793f553dcc6af9377e2604067d47537d0f692406e1e26adb1c04fd",
    "signature": "0x8def65e77c30eb2f31c33355c258e3ead2d4d54e907988a642d5848cf346be4d440b458cc14d34093238b1e411092b3ed524c07428143a96de190c84a4dafb7a1b",
    "signer": "0xeC0a008bEE5E6735627fd06400b52b30a39a8CE3",
    "userId": "972911900"
  }
}