{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x157e31c886af1d024ab2a1cb082f7b0513766616768fb404fbb4369ba5813df2",
    "signature": "0x76751ebd20f765fd7acc184235eb25adada78460829548c4ad4a503e72e6bd954023d637e2bb2d82af35a4b313d8495202ccea88f2eca40018412328b62395001c",
    "signer": "0xaC2dE7715e3c8cF361cD6EC75fb75b2EBd90cFda",
    "userId": "417417032"
  }
}