{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142488",
    "entityType": "User",
    "nonce": "0x5285553470c96c1cc43c8453679da87cd460ee4073ba2a074c4f03b6deb54d31",
    "signature": "0xf9df8bee705963ec3bb73ce28f0a2ee1b2d56ff051ff0da72065a3c24042906362d1790bb89446b2aa0ece05db2077f8206d3bdffe4682683196182c64df0a191c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}