{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa4b581065f7b4cd708b966d9b377e0029afc547aa52fcb4e9dc9e77bfbe92b5f",
    "signature": "0x8897a23f9943636a5ebbf79a17feb42a04f5f99b1b5b339c37c713c53934847e629873d4f82f0f4a0c4d53c78c61838a5a5e0156df70b733a658cf8d455b5c9d1c",
    "signer": "0x6e0E2d70aa2F34f687b4b7d7076ACE86a19d1A5F",
    "userId": "266646668"
  }
}