{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "576009688",
    "entityType": "User",
    "nonce": "0xdcf1984810e356d89d6261564987bc62e5522cda3635775f75a000d7a5381b2e",
    "signature": "0x86cefc0de4441d3fe42e5618eeb5c9a2bfdfb9a5461edc387ecd0a1b415e374651077e4cfa726a145ee8565d90851fd7300c9b0e0bc1a378896b9327b6ff2c161c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}