{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfedb46073d540e84726af6fe05468f1de307824e9f03489bdcaeab6a3530683f",
    "signature": "0x389f3b2a847eb65a6e6221029928b328e338a64b6508007271c1de5e6b52d52270f95e804c6ae5973b3004c397023eaea5dc20376da53b752374d137e49974db1c",
    "signer": "0xC14d01Ad1443F7623B61668BA3E768ea7Ff0666F",
    "userId": "321158566"
  }
}