{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55368559",
    "entityType": "User",
    "nonce": "0x60be769befbbcb30b5206c0bb5c8a2014cce4116e5614273aa3040972c083db8",
    "signature": "0x541ce0db8464290dd653d24bcf7e4b012ca291a371537b59ea6bc52ed98a5b1f44030816c8c9548eea52981407b1cae5b5e00ae2f49436bd9251bd9747d01f321b",
    "signer": "0x67E321241D4e44e5aB5D1c365505f0F33044C7BE",
    "userId": "460631539"
  }
}