{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8b4b5e5846dd4e91f13d0eb52b88e6123061ab6a5d910baf2758520ba13f9804",
    "signature": "0x1f10ade10cd4608cb579d721292f8895afee6cbbc03ef9c09483f6ecc0956e4a71eed918075754631ab2a67de2636d9e1c5a1d4b521a4c4f39787e7919cb213d1b",
    "signer": "0xEd4A4410f51c0eE813c67f77160d10FC7dAe0EFa",
    "userId": "723008316"
  }
}