{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672",
    "entityType": "User",
    "nonce": "0x384fb970cc6424c6453fb3e6751695e9566bac30a7f98f888a0e17fa258e7c4b",
    "signature": "0x6c6468b61e5b7889cfe459de48a414f7b18b04fbf12afe50dfd7c198deee562369c1b15a61ac0afba60c97949f4505613c7b01a591255ba24235780735619a831c",
    "signer": "0x34a55C466710c320347C9bb5Af1d24DC9D4C240f",
    "userId": "321784073"
  }
}