{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "924343919",
    "entityType": "User",
    "nonce": "0x37c46fafbb157493c23c2994e9987a3be85a18d51754a91b326ddc0e73609e86",
    "signature": "0x509b1c7c70c827a9dc4d68b19dba37f07251a6e2a49a64c22fdab6ed4d9a152a729d75616fb7ef3634c9dc9b00dac70818e89d2be9eb1ebcdd1f8dd6f032fc511c",
    "signer": "0x067EBf39687594d4b8D1a38b36C8b0C2b51B8D56",
    "userId": "301316043"
  }
}