{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9486eb56049b79c27504d8069027d57319504a74daea517be3d624a1892086ba",
    "signature": "0x7ab78d4c879dddc243dd7fac1d190bf15421cb4108ff0863d678e83bc023d0f03de98f369c1ea3a8bdb6f456d7ca63af31db228f5a6805ea371c621e6873ad441b",
    "signer": "0xcE20B04E4F03E1CC0E40B283007371eC873c0200",
    "userId": "775116623"
  }
}