{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcb0f2d8ca8bbe5b5463d2feab1dad386c5cc000a3fcebd66647322219d976cca",
    "signature": "0xdd1a41a2df98977f827e40838bcbfa7af9f5238c6bdac052d9f454756e0029907f675f665d7ffb362c82e8b8ab1145569bc88ec616c6b49fc43c0354562c81241b",
    "signer": "0x899b2CDf71A8eb1F749632F1D3499aB68e4B877C",
    "userId": "448861887"
  }
}