{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x9fa353009feedc23eb61c6c520d83aa2a0b89eca287ffcd7174f24bb98f7d4bf",
    "signature": "0x874319efaeee59af64ac41787260558cbc48a4b6ca141e6ca1db476afd41fe432915fd29ffcd5d0c76d6e646a00d41402c12e7496c20da0d46d52cfa768989e11b",
    "signer": "0x775bA7FB8a4FF9354c099465ca493BA949FdAca6",
    "userId": "597677270"
  }
}