{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "950478625",
    "entityType": "User",
    "nonce": "0x01317bca5984639e545f194180f186f34f23a028294853493e0fc52fc6f917e7",
    "signature": "0xf3553f2e8d8d49526ea9ecaaa6100b57dfd703347d07508970d044664c03d0e51307649e030c25117cf0e8f748096e3bdc11ef46f8b0ed6d0d504375995665631c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}