{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409512835",
    "entityType": "User",
    "nonce": "0x4ca5e92f0dc8d1a4c4f6a04ac77d290b026550bb0b81dc6307b611736e42a027",
    "signature": "0x3a1b0ad29e8315439184ed65890da9b7125bfd287ad6e11b7b049ef8ec26dedb0673b4b50a73e815d57287909756967849b992418c896ab4970b5a27ba2379b01b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}