{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x04f9ed2664cde71f58fc56a8858dc0bf51c197be072fcfac30aea712991cfcae",
    "signature": "0x327cee075371842276fa28bd24826f063d444531b1dde4d87b54d662de3bc7ba502d00925454cd2b2170b0f518ef0cf2a86361e13bb78a3b3f69c7b2e1b4c4c71b",
    "signer": "0x7212FC9b44b2BB370D62E8b98dA3f7D74c307696",
    "userId": "324170795"
  }
}