{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64539",
    "entityType": "User",
    "nonce": "0xbd62316661a96b2b420b9eb2bde6e79ca428e776c73f0efb8004ba205a99c66d",
    "signature": "0x0352c2182d7a3465c81823b17743a4beba0e9b72add7b571d34c2f1e502f93cc4d129e841b2aca0ed15c82d58239e980fb88fda329c9da4f30f0e5bbdae310851b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}