{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1921",
    "entityType": "User",
    "nonce": "0xfd584b8795293b4914c483c2267aaf3f7250958979a8045b5d0a5511eb05fbda",
    "signature": "0x0be4d18fabb0ddfca0edb137d8d301f22450dec679be5770cb67b896eb935e794b5366fe56ac8dc75d665e3e067759b643f90dc967136db67319bb29f9ef64c81b",
    "signer": "0x716be6DE1a739D8d981854E5a6992A6b53C88dd0",
    "userId": "244357868"
  }
}