{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105150",
    "entityType": "User",
    "nonce": "0x00e33440f76cc04450cfd2b03f31b646467e2fae25119a9d67c363d88d688361",
    "signature": "0xdd7c68314cd0c5aca0943301f06bf14236d6f06c916f06966e806406a46447047d725b98236ca5983dfcddae2825f6f890dfb93c1b222970dc9b205bacbfe9961c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}