{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "977881607",
    "entityType": "User",
    "nonce": "0xd847ba86c1be8fa7fbaed6b03ab4eb7a761af3363049d1bac9a07ecf61e568dc",
    "signature": "0x9e389aecf9bda49776278d29d2ec091403aedb43eb46373e841396578dac778a3171e8c99f2a7c3b1b6e2bbf4ac989c6de14a2d619786274c9924fa0223df9591c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}