{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x270021d09393ea4b224992c56b49a4d4d3a5f8e2b4a5fe0a37832e93f52d1e4d",
    "signature": "0xb775570e40180fc3c0886c4a33bf40a39d17ecaef4a73915c0ac7b1c4b768fa95305fc5c0480cc99c54f242671c84da2977799586697d3e15974e5a0d8e31e0c1c",
    "signer": "0xaddfe8a42a112B9e07190590DCa78C32CB396871",
    "userId": "380767039"
  }
}