{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa61a1b1a2b8fd954157e52cd96e632860e5421621bc85cdd65ef171354e4ef10",
    "signature": "0x472245401152bb3fbb00a99e913933d2693bd05a2dc6952490d88c640863ae7b3d03a8b1880e1109ea5a715b6117a606f84f392ab97f4314254ad3e7cbdb6b4f1c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}