{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe5a2317bfb260886293f9d0791974818b5f51ad94f200f027a4bf36a838d2da4",
    "signature": "0x0685639c6c7f9f0c8552b1b978a8096a4750c4acd1b23d4d0379f403d64188004116292d42a48b6069c8160bd77f5e4d907bfb4cc727d863cd67878d967be9661b",
    "signer": "0xD7ee815d46C5aC4774246f8F1B91342c1D31E86A",
    "userId": "898922309"
  }
}