{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0fdb75a5a0dba5d33d9328546fda8e7c3f13f9b903103dd090b560d627174c8a",
    "signature": "0xde727b119ed59636023182830a0f36925129befd93b15d0125792338db8d593d756fd5878d25aae939b929358e6b3630381d1524a2aeaee65c9211e651d2294c1b",
    "signer": "0xcaAc28aeAb1d6A402463f9F4e096De71F8e8c319",
    "userId": "514794984"
  }
}