{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21894",
    "entityType": "User",
    "nonce": "0x79a61d3e97c56f7f2a33ef05fbc8fab6b352ab05c2c9b95969747c2bb40cdd2a",
    "signature": "0xecbfb608cbb822e0936e6ebedbd959ef5891e9c423646882ba77f895247f7f2f5bd35067f74ff020ce0dc5afe8af518c89f7bde8aa9e4a1dddfb4c67f13198b91c",
    "signer": "0xf0CB0bE09587831c3cC7689f3e01De1457073033",
    "userId": "743836779"
  }
}