{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1cbce78e6ecf85145ab783424410bdb4ee22564ece8753f7e1e501e936a95131",
    "signature": "0x2d2aa13c96c6d544fa9f84cba842792672d31334e5a1f07f4cb2b3638fc808886a0b0869fab7acfbee8114f61ac535b37df838aaf1f2c5852fd5e86c157d92931b",
    "signer": "0xf50E061928D52A2Cd9faE7ff78a980a27734718B",
    "userId": "360312236"
  }
}