{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x401de5ba7e8eab20fba4714c511354f48abc1885abf844b3bd7cf70406314bed",
    "signature": "0x03a300e90be84c6a35123c03bd4c79c4136297984823b450a871b214ce3babc84af555679a9f02618bed546798e8a086216806da991605395052b38af76ebcb21b",
    "signer": "0xc5feD1872BC05Ec03aF299E6A4B8B81D9d531925",
    "userId": "599834673"
  }
}