{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875378857",
    "entityType": "User",
    "nonce": "0xf612018e1da7dc7ba0e55aa22442966034d2f7aa48456c87a86c73c74930ff86",
    "signature": "0x177109dc93d64fd9bd82a414cd5533db905883692e44a3d473badd7c2bdf54a55d716fb0bc27cc9c268e5d0142e5e063534aef1226995e9a5a8d3a64f42e31741b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}