{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3cc785fc21dd436096eedc7cd4c612238782c4697927bcb5abec2d16e46d355a",
    "signature": "0xa72921d51d729dc743fb161ee19653fc37f64a21487af5186dbf90d6f270b5695eb7d369ee554457d1c72a5766d0a0247e4040277b20cc61fe10bc316b7e74201c",
    "signer": "0x73760064D08e854716c13081dE151D63b16b2Fb0",
    "userId": "646161559"
  }
}