{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423055172",
    "entityType": "User",
    "nonce": "0x56c3ba3de95beab1880605cb596bfd73a097fe88842f1f8c7044a790a16ec47d",
    "signature": "0x23675952676c0d4206a83b4a5a12a0b112210aed2c52c0fbcf30ede607950fe90a2a8ee938cbd14ab5cdff7aa4fabae184b00e0159611fd62888a214baa031a41c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}