{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304493",
    "entityType": "User",
    "nonce": "0xd3ef04059d997d31a325c0ed1768599fda3ba4a6045a119a82571a8bfab084c9",
    "signature": "0x700836acd2e1a8034f14640450a9d9ebf29e1ef15680a8ccd104ba110201e4e56d02fbf0ce0b0318497133d7379fdb81de30048e930302e30bf4675c9e2f66491c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}