{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x474e37dc764cd17c751fee36ce6bafe716f665ec9aa26785aab9daca11b23893",
    "signature": "0xc084bb2f06a6c2c95135f29ece529c7f388d86e19a6202fd5c1f733a6f8024f85a2ea8336af257eed017486e577ab7b893dd111aadb89e68ec612beeb5bcea211c",
    "signer": "0x852FDa0c130c951EDaE841AE4bc41ec03BB55D5D",
    "userId": "709857362"
  }
}