{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "979988194",
    "entityType": "User",
    "nonce": "0x64c944d8ac886ee3b772e026d15ce290b8072da92d9eb2a73bdd0e223ade6287",
    "signature": "0x357cbde1b056cdf08ec954f08d4d6fc2f39d61dbb0ed064e1bda244dc46a58fb790c97780f75c804e77a0fe1601380b1c4f7932b5eb245ac47c17c478b9905ea1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}