{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73877",
    "entityType": "User",
    "nonce": "0xf1c755e03faaeca55d832c307c44b10f8787c4a7f3fd332d86062e2ca74d0bf5",
    "signature": "0x8dfa0e9385f025bac7cad4353ac21d796c1b4ef9b10e192e2ef5f8935004f4b3706812423cab0d7d1a57f5e9c46cb7207d5faf2eba86cb1ed9c80e1e50b798271c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}