{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667026895",
    "entityType": "User",
    "nonce": "0xbd5dde454b4dd1e0179a85735bb0c253d68333cea591ff4a92985ade9a5120e5",
    "signature": "0xfa034f347fdeaa9936e7e440518a87d2e5fbd94bed7d9ddd8c6e0e1a6213c2cf5c442bed7dac514b8a640a4ad3584b2b97705dfd364f840ce555f42a539344381c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}